1. Organic Waste Conversion Via Continuous Anaerobic Co-Digestion of Oil Palm Empty Fruit Bunches and Cow Manure: Evaluation of Feeding Regime on Methane Production
- Author
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Darwin, Atmadian Pratama, and Mardhotillah
- Subjects
Chemistry ,Agriculture (General) ,Mechanical Engineering ,0211 other engineering and technologies ,acid accumulation ,02 engineering and technology ,Biodegradable waste ,010501 environmental sciences ,Pulp and paper industry ,01 natural sciences ,S1-972 ,solid concentration ,Feeding regime ,Palm oil ,021108 energy ,Co digestion ,Methane production ,methane inhibition ,Waste Management and Disposal ,Agronomy and Crop Science ,Cow dung ,Anaerobic exercise ,0105 earth and related environmental sciences - Abstract
Anaerobic co-digestion of oil palm empty fruit bunches with cow manure was studied. The research focus was on the evaluation of feeding different solid concentrations of the substrate in the on-going process of anaerobic digestion. The solid concentrations ranged from 0.5 to 12% TS. Results of the study showed that the maximum methane production could be reached with the reactor digesting substrates with 4 to 8% TS, in which the methane produced was from 1300 to 1400 mL per day. A significant drop of pH from 7.02 to 5.97 occurred when the reactor was digesting substrates with 10 and 12% TS. Acidic condition caused by organic matter overloads lowered the efficiency of organic conversion represented in the low removal of COD, which was only 22.4%. This finding is highly significant for the waste management industries in terms of dealing with the digester upset due to the digestion of large amount of organic wastes.
- Published
- 2021